In the THz frequency region, a photonic crystal resonator optically coupled with a metal layer forms a system of strong electromagnetic quenching spikes that match the reflection spectra of a bore resonator. The estimated angle-frequency map of reflection for a metalized polypropilene/air structure was revealed to feature tiny lines of exceptional transmission through the metal coating. We discovered that defect-containing resonators can also generate strong peaks of electromagnetic transmission under certain conditions. The effect is primarily determined by the defect position and the number of periods. When a thin inclined line of transmission occurs against the backdrop of flawless reflection, a surprising quality of the considered resonators can serve as a ground effect in compact and dependable direction control devices and THz radiation collimating devices. In a metalized resonator structure fitted with a stochastic EMW reservoir, the energy concentration and collimation effect were investigated. The use of peaks of resonant transmission to improve THz radiation filtering was discussed.
Author (S) Details
E. Ya Glushko
Department Semiconductor Photonic Structures, Institute of Semiconductor Physics of NAS of Ukraine Nauki Prsp., 45, 03028, Kiev, Ukraine.
View Book :- https://stm.bookpi.org/RTCPS-V1/article/view/3612
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